A Way To Limit Radiation Hazards In Space?

"For astronauts, however, there is one danger in space that does not end when they step out of their spacecraft. The radiation that permeates space-- unattenuated by Earth's atmosphere and magnetosphere--may damage or kill cells within astronauts' bodies, resulting in cancer or other health consequences years after a mission ends."

"An experimental drug helped protect mice and monkeys from the damaging effects of radiation, researchers said on Thursday, in a finding that may lead to less toxic cancer treatments or an emergency treatment for radiation exposure."